Transceptores

Equipos de radio utilizados

En nuestra estación terrestre disponemos de diferentes equipos de radio para diferentes bandas.

Para la banda de VHF disponemos de un transceptor Keenwood TM-241 y para la banda UHF de un Kennwood TM-441.

Otro dispositivo muy versátil es el receptor SDR dedicado a satélites FunCube Dongle.

 

 Keenwood TM-241

Características:

 

GENERAL
Antenna Impedance 50 ohms
Current Drain Receive Less than 600 mA
Current Drain Transmit Less than 11 A
Dimensions (W x H x D) 5.51 x 6.3 x 1.57 in. (140 x 40 x 160 mm)
Frequency Range TX: 144 – 148 MHz
RX: 118 – 174 MHz
Ground Negative
Microphone Impedance 500-600 ohms
Mode F3E (FM), A3E (AM) (RX only: 118 – 174 MHz)
Operating Temperature Range -20°C – 60°C
Power Requirement 13.8V DC (±15%)
Weight (approx.) 2.4 lbs. (1.1 kg)
RECEIVER
Audio Output Power More than 2W (8 ohms, 5% distortion)
Circuitry Double conversion superheterodyne
Intermediate Frequency 1st IF 10.7 MHz
Intermediate Frequency 2nd IF 455 kHz
Selectivity -6 dB More than 12 kHz
Selectivity -60 dB Less than 24 kHz
Sensitivity (12dB SINAD) Less than 0.16µV
Squelch Sensitivity Less than 0.10µV
TRANSMITTER
Frequency Tolerance Within ±10 ppm
Maximum Frequency Deviation ±5 kHz
Modulation Reactance modulation
Modulation Distortion Less than 3%
RF Output Power HI 50 W
RF Output Power LO 5 W
RF Output Power MID 10 W
Spurious Radiation Less than -60 dB

Kennwood TM-441

Las especificaciones técnicas son similares al modelo anterior salvo el rango de frecuencia, en este caso es 430-440 MHz.

FunCube Dongle pro+

Este aparato es un receptor de radio SDR (software defined radio) diseñado especialmente para la recepción de satélites.

Specifications

  • Guaranteed frequency range: 150kHz to 240MHz and 420MHz to 1.9GHz
  • Typical frequency coverage: 150kHz to 260MHz and 410MHz to 2.05GHz
  • TCXO specified at 0.5ppm (in practice about 1.5ppm)
  • 192kHz sampling rate
  • Extremely simple hardware setup, just two connections, an “in” and an “out”:
    • Standard SMA female antenna port
    • USB 1.x type A male connection
  • Eleven discrete hardware front end filters including:
    • 6MHz 3dB bandwidth (10MHz at -40dB) SAW filter for the 2m band.
    • 20MHz 3dB bandwidth (42MHz at -40dB) SAW filter for the 70cm band
    • Third- and fifth-order LC bandpass filters for other bands
  • Front end LNA OIP3 30dB
  • Typical noise figures:
    • 50MHz 2.5dB
    • 145MHz 3.5dB
    • 435MHz 3.5dB
    • 1296MHz 5.5dB
  • Typical NFM 12dB SINAD measurements:
    • 145MHz 0.15uV
    • 435MHz 0.15uV
  • No additional drivers required for Linux, OSX or Windows
  • Integrated 5V bias T switchable from software

Toda la información de este receptor se puede encontrar en su página web www.funcubedongle.com para ser más precisos aqui, se podrá encontrar tanto documentación, como software, código fuente, etc…

 

 

 

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